Richard Emil Welch

US Patent:

6584940, Jul 1, 2003

Filed:

Jan 9, 2002

Appl. No.:

10/042984

Inventors:

Prasad S. Khadkikar - Seville OH
Richard L. Gerich - Mansfield OH
Christine M. Hudson - Hudson OH
Jeffrey A. West - Bellville OH
Derek J. Rose - Mansfield OH
Douglas J. Kempf - Mansfield OH
Douglas E. Prather - Jackson MI
Richard E. Welch - Lexington OH

Assignee:

Therm-O-Disc, Incorporated - Mansfield OH

International Classification:

F24H 140

US Classification:

122 181, 122 1831, 122 442, 1221552

Abstract:

An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue pipe construction comprises inner and outer concentric flue pipes which define an air space therebetween and one or more valve arrangements associated therewith to selectively restrict air flow through such air space. The valve arrangements include a thermally responsive actuator operative to open and close the valve member in response to heat generated by firing of the burner assembly without the need for any external power supply or interlocks.

US Patent:

20170082241, Mar 23, 2017

Filed:

Aug 2, 2016

Appl. No.:

15/226782

Inventors:

RICHARD D. WELCH - MAPLE VALLEY WA, US

International Classification:

F16M 13/02

Abstract:

A tie-down anchor for securing an object to a plank deck structure having first and second members spaced apart by a gap. The tie-down anchor includes a shaft assembly and a spring assembly. The shaft assembly includes (a) a longitudinally extending rod, (b) an anchor portion located at a first end of the longitudinally extending rod, and (c) an attachment portion at a second end of the longitudinally extending rod. The anchor portion may include a bar portion sized and shaped for engaging a lower side of the first or second member, or both. The spring assembly includes a compression spring, an upper spring retainer, and a lower spring retainer. The spring assembly is adjustable along the longitudinally extending rod, between the anchor portion and the attachment portion. By engaging the lower spring retainer with the upper side of the first member or the second member, or both, and compressing the compression spring, the bar portion of the anchor portion is pushed below the plank deck structure. Then, the shaft assembly is rotated and subsequently released. Upon installation, the tie-down anchor securely engages the plank deck, by and between the bar portion and the lower spring retainer.